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PHONE NUMBER PREFIXES IN THE 231 AREA CODE

Thousand digits 231-550 Area Code & Prefix

(231) 550-0xxx
(231) 550-1xxx
(231) 550-2xxx
(231) 550-3xxx
(231) 550-4xxx
(231) 550-5xxx
(231) 550-6xxx
(231) 550-7xxx
(231) 550-8xxx
(231) 550-9xxx